不存在

There is no coalition of members of the economy.

这种经济的各部门之间不存在联合。

By splicing in genes from other bugs, the company was able to engineer synthetic metabolic pathways—ones that do not exist in nature—that enable the bacteria to produce isoprene from the sugars found in plant materials such as sugar cane, corn cobs and switchgrass, a tall-growing variety native to North America.

Genecor的科学家们将其它细菌的基因拼接到大肠杆菌上，从而在大肠杆菌上制造出一种自然界中不存在的代谢物合成途径。它使细菌能从植物材料中的糖分生产出异戊二烯——这些含有糖类的植物包括甘蔗、玉米芯，还有原产于北美洲的高个儿品种柳枝稷。

Today, cockfighting is almost nonexistent.

今天，斗鸡几乎是不存在的。

The calculation method of diffusion coefficient is very important for calculation for the droplet evaporation and combustion.

在超临界燃烧阶段，液滴表面的概念已经不存在，燃料的扩散过程决定着燃料的空间分布和随时间的变化。

He regards liberty as the condition of human being,and the non-exitence of coercion.

他将自由界定为人的一种状态，一种强制的不存在。

In a computer network, this coherence, model, and software are absent.

在计算机网络中，这种关联、模式和软件都是不存在的。

The large majority of the forests that covered the Colchis plain are now virtually non-existent with the exception of the regions that are included in the national parks and reserves (i.e. Paleostomi Lake area).

原来覆盖刚切斯平原的绝大多数森林现在根本不存在了，除了那些处于格鲁吉亚国家森林公园和 Paleostomi 湖泊保护区内的森林以外。

The specified named color index is not present in the profile.

该指定的命名颜色索引在配置文件中不存在。

Not once did we make a Target run or pick up the pre-ordered (and color-coordinated) dorm room decor from Bed, Bath and Beyond.

OK，当时这两家店都不存在，但你明白我的意思。那时候没有家长介绍会也没有新生介绍会。

The bad habit is:he used to consider it a great joke to go into expensive cometic shops and make outrageous requests for goods that do not exist.

这个坏习惯就是：他曾经认为走进一家名贵化妆品商店，荒唐地提出要买一些根本不存在的商品是一件很开心的事。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。